Custom Authotization problem

Hello,

I've just want to redefine the Authorization methods for consulting a DB, as is explained in https://doc.nette.org/…thentication#…

But, when I enter the lines

common:
    services:
        authenticator: MyAuthenticator

In the config.neon file, an exception is raised:

Nette\InvalidStateException

Found sections ‘common’ in configuration, but corresponding extensions are missing.

Thanks in advanced for your heplp. Here is my complete config.neon file:

parameters:
	php:
		date.timezone: Europe/Prague
		# zlib.output_compression: yes

nette:
	application:
		errorPresenter: Error
		mapping:
			*: App\*Module\*Presenter
	session:
		expiration: 14 days

common:
	services:
		authenticator: CSAuthenticator

services:
	- Model\UserManager
	- App\RouterFactory
	router: @App\RouterFactory::createRouter`